Hi, I tried to solve these by way of the reduced row echelon, and posted my answers. If anyone could check em', I'd appreciate it.
x+ y + 2z = -1
x- 2y + z = -5
3x+ y+ z = 3
(For this one, I got x= 1, y=2, z= -2)
looks to me like x=y=z=0? But when I reduced the rows, it was showing that 1=0, so could the answer be no solution?
Thanks a lot